DataSource Controls :: Increment Non ID Column In SQL?
Jul 8, 2010
I have a simple list of data in my database that I call to my page. I have used the asp.net 'reorder list' ajax control to provide a drag and drop way of managing the sort order of my data. It uses a 'position' column in the database to do this.
How do I go about making sure that when inserting data to this table, the new item gets assigned the correct 'position' value? For example if I have 9 items already in my table, I want this newly inserted list item to get assigned a value of 10 in the position column.
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Similar Messages:
Feb 2, 2010
I'm trying to define a computed column that will contain an auto-incremented number. In other words, I want it to work exactly like identity, but since I can have only one identity column per table, I wanted to make a computed column that reads its latest value and increment it by 1.
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Apr 28, 2010
i have a question, suppose i have a table 'tblImage' which have 3 rows of data and my auto increment is not +1.
imageId imageName
1 a.gif
2 b.gif
4 c.gif
i want to query '2' using LINQ C# to the table in MS SQL and show the record which i have done easily BUT now i want to get the next auto incremented value to make Next button on the sane web form, which is in this case is '4' and i also want the previous imageId as well.
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Mar 30, 2010
I'm still relatively new to asp.net I'm trying to figure out the best way to write and implement this.
I have a cell that needs to autoincrement by 1 for every new database row in my table, Unfortunately I have to have the autoincrement restart at 1 at the beginning of each year so I can't use SQL Server identity increment. Maybe i'm wrong about the last statement and I just don't know how to do it.
The code i have is something like this:
If thereadedyear <> Now.Year then
theReadedYear = Now.Year
SomehowWrite readedYear
StartNumber = 1
Else
StartNumber =+ 1
End if
How do I implement this in a Insert Template?
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Jul 11, 2010
i have a topic like this before and it has been resolved using dataread. But now, I want to ask on how to do it via dataset.
My code is:
[Code]....
What I want is to read the from the dataset the maximum value so there will be no need to open a connection from the database.
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Feb 11, 2010
I'm trying to get an IDENTITY column to auto-increment with each new row inserted, so that the field (userid in this case) can be used as a unique identifier.
However, I'm getting this error:
[Code]....
My code looks like this:
[Code]....
I don't understand - if I have to explicitly insert something into my auto-increment column, how do I know what to insert? Isn't the point of an auto-increment column that it's... auto?
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Feb 18, 2010
I am using LINQ to store and retrieve data from tables with a clustered index key. However, I also need to know how to obtain an inserted table row identity with an auto-increment Primary key. The "Go To Definition" feature for my data context of dataClassesDataContext provides the following information:
[System.Data.Linq.Mapping.DatabaseAttribute(Name="EFMDB")]
public partial class DataClassesDataContext : System.Data.Linq.DataContext
I am asking for the C# code that is needed in a button click event handler that will insert a row of data in a table named "Fields". It only consists of an auto-incrementing primary key column (FieldID), a string column (Phrase) and a null defaulted variable column.
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Oct 23, 2010
show me what is the syntax to add an increment column to Select Query? There will be additional column which goes 1,2,3 ... n.
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Jan 6, 2010
I'm currectly tryin to access a specific value in my database in a specific column. I'm tryin to use the primary key of the table to access the actual value in the row of that ID.
The current code:
[Code]....
Just iterates through the table and looking for any row with the boolean 'checkin' value is True, then it takes the 'id' value of that row and stores it into an array. Is there a way that I can access a another entry, and only that entry, in the table with the 'id' stored in the array?
Like if my data base contained and int, primarykey, `id` value, a boolean, `checkedin` value, and a `time` value, is there a way to access, lets say, the row with `id` equalling 3 and and the checkIn value from that row?
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Oct 19, 2010
I'm trying to retreive a column value from gridview5 to use it in a query to display resuls in gridview, Also how do you hide a column in the grid?
Where (p.Link_ID Like GridView5.?
[code]....
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Mar 31, 2010
i have a datatable with several columns and rows. now i want to copy the last column fully (all rows) and create the new column with that values.
it means last column values sholud be moved to new column (now this is the last column).
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Sep 29, 2010
Scenario:
I am creating a custom gridview control which has a custom CheckBoxTemplateField column (deriving from TemplateField class). This template field column has custom Checkboxheadertemplate (implementing ITemplate) and CheckboxItemTemplate (also implementing ITemplate). In InstantiateIn method of both templates (header as well as Item template), I am adding a checkbox control which has Autopostback = true.
My requirement is:
I want to mark all the values in the binding column of datasource if checkbox in headertemplate is checked. I dont want to mark only rows visible on grid. I WANT TO MARK ALL ROWS IN DATASOURCE. I want to do this in _CheckedChanged event of checkbox in header template.
Problem I am facing: When I check/uncheck the checkbox in header, it postbacks. so in OnCheckedChanged event, gridview's datasource is null. Secondly, in any event of gridview, I could access only those rows of datasource for which corresponding rows are visible in gridview through Gridviewrow.DataItem property. But I want to set it for all rows in datasource.
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Dec 15, 2010
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
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Mar 17, 2014
can i count data entered?
current page only can be proceed to next page only if user entered 2 set of data.
i use count=count + 1
but everytime i enter new data the count back to 0
this is my code
If msg <> "" Then
MessageUser(msg.Substring(0, msg.Length - 1) & "must have value.")
Else
If clsRecruit.NewReference(hd_personid.Value) = True Then
counter = counter + 1
getReference()
txtbox_name.Text = ""
txtbox_residence.Text = ""
txtbox_mobile.Text = ""
txtbox_email.Text = ""
txtbox_job.Text = ""
End If
End If
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Dec 23, 2013
I have on dropdown list which is bound with database in dropdown list there are months and year i want to do that when i select one data from dropdown list then it should be incremented by 6 and display in text box
For example
I select January 2013 then in text box July 2013 should be displayed...
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Jan 1, 2010
I have a table named dups. There are 4 columns in the table.
id, name, path, hash
I want to return only the name, path, hash of each row where the hash field is the same. Example there are 100 rows but only two qualify the return would be.
file1 c: 10909
file4 d: 10909
For some reason this seems to be a more difficult task than I though it would be.
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May 17, 2010
could some one help me how can i get max number of a column in sqlserver2005.
actually in my column records are,
1,2,3A,3B,3C LIKE this format.
so how can i get max numer i.e 4 here.
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Mar 31, 2010
i have a button and in click event i want to take the SUM() of a one cloumn and assign it into a integer and if that integer is > 20 display "pass" or something
i've tried many ways but non worked.
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Jul 20, 2010
I was woundering if its possible for me to check for accesslevel value from the database using objectdatasouce.... From my coldfusion experience... i could just use an "if statement"
e.g: <cfif> (datasouce.column = x) then
<cfoutput> msg</cfoutput>
</cfif>
Am not so sure about .net.... All i am trying to do is to check for one value on the db and i dont mind puting it on code behind... i just need a way..
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Jan 14, 2010
I know there is a way to get all the column name from a table, but that is not what I want
I want to get only a few column name from the table, is there a way to do this?
Let say, table A has three columns that is A1, A2 and A3, I only want A1 and A2 column names, again, can this be done?
BY the way, I am using SQL Server 2005 with asp.net application.
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Jan 17, 2011
How can I autoincrement the value of a boundfield column in a gridview ?
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May 11, 2010
How to search through a Database column C# and display only what you want like a number 2 in a Gridview ..
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Jan 25, 2010
Example:-
column values:- Microsoft Java
I like to update above record using below SQL, so that new values are appended to old values instead of removing old values.
[Code]....
Output:- Microsoft Java some text
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Jan 12, 2010
Customers of hours buy packs of hours, these are credited and debited on their account. We have a prepayhours table and that has various columns in it, one credit and one debit. I have written a query using the Query building and SQLDS to total these columns, which is fine. What i really want to do is get that query, or if there is an easier way to add up all the debits and subtract them from the total of credits so you would end up with a + or - totalThen with that i can put it into a label or if there was a way to add a row at the end of my gridview which just said total in one column and the total of the hours in the next.
I have some SQL code which seems to work in SQL 2008 but not in the SQL designer for VWD.
CREATE VIEW dbo.prepayhrstotals
AS
SELECT COUNT(Debit) AS cntDebit, COUNT(Credit) AS cntCredit
FROM prepayhrs
GO
SELECT (cntdebit - cntcredit) AS totalhours
FROM prepayhrstotals
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Jan 19, 2010
i dont know why this happens and when happens......i have one employee table that contain date field and that field contain two different values one is -'2008-10-01 00:00:00.000' and second is '2008-10-01 12:00:00.000'.can anyone explain when this type of value insert in database.
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